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Sleep Cycle vs Sleep as Android: catalog facts
Sleep Cycle	Sleep as Android
Freemium Free to download, with premium features offered through a subscription after a free trial.	Freemium Free to try, with paid features unlocked by purchase.
Android, iOS	Android
Sleep tracking with only a phone Smart alarm that wakes you in lighter sleep	Smart alarm based on sleep phase tracking Works with phone sensors or wearables
Main features are pushed toward a paid subscription Sound-based tracking is an estimate	Android only Large feature set can take time to configure
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.